# range
for i in range(5,10):
    print(i,end=' ')
# 切片
#   0   1   2   3   4   5
l=['a','b','c','d','e','f']
# l.append('g')
print(l[1:6:3])
l2=l[2:len(l):2]
print(l2)
# 字符串切片
c='0123456789'
c='abcdefghij'
print(c[3:8:3])
